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A 40-year-old member asked:

Is it possible to get melanoma skin cancer in your armpit where the sun never shines?

3 doctor answers12 doctors weighed in
Dr. Steven Ginsberg
Internal Medicine - Hematology & Oncology 38 years experience
Yes: Melanoma can occur in non-sun exposed skin.
Dr. Joseph Woods
Pathology 29 years experience
Yes.: Although risk factors include sun exposure and fair complexion, patients with dysplastic nevus syndrome (an autosomal dominant condition with many nevi), and certain kinds of melanoma , like acral lentiginous can possibly get malignant melanoma even without sun exposure. Anoyone with a nevus, or nevi should be aware, especially if it is irregular shaped, multicolored and asymmetric.
Dr. Mike Bowman
ENT and Head and Neck Surgery 20 years experience
Unfortunately yes: Melanomas are most commonly caused by sun exposure, but they rarely do appear in strange places...I have seen/known patients who have had melanomas come up under their fingernails, in the mouth or sinuses, etc. If you notice any moles on your body which are changing, have them looked at.

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Last updated Mar 12, 2020

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